*.c: move to src/

[pd-aubio.git] / src / aubioonset~.c

diff --git a/src/aubioonset~.c b/src/aubioonset~.c
new file mode 100644 (file)
index 0000000..f5efd03
--- /dev/null
+++ b/src/aubioonset~.c
@@ -0,0 +1,105 @@
+/**
+ *
+ * a puredata wrapper for aubio onset detection functions
+ *
+ * Thanks to Johannes M Zmolnig for writing the excellent HOWTO:
+ *       http://iem.kug.ac.at/pd/externals-HOWTO/
+ *
+ * */
+
+#include <m_pd.h>
+#include <aubio/aubio.h>
+
+char aubioonset_version[] = "aubioonset~ version " PACKAGE_VERSION;
+
+static t_class *aubioonset_tilde_class;
+
+void aubioonset_tilde_setup (void);
+
+typedef struct _aubioonset_tilde
+{
+  t_object x_obj;
+  t_float threshold;
+  t_int pos;                    /*frames%dspblocksize */
+  t_int bufsize;
+  t_int hopsize;
+  aubio_onset_t *o;
+  fvec_t *in;
+  fvec_t *out;
+  t_outlet *onsetbang;
+} t_aubioonset_tilde;
+
+static t_int *
+aubioonset_tilde_perform (t_int * w)
+{
+  t_aubioonset_tilde *x = (t_aubioonset_tilde *) (w[1]);
+  t_sample *in = (t_sample *) (w[2]);
+  int n = (int) (w[3]);
+  int j;
+  for (j = 0; j < n; j++) {
+    /* write input to datanew */
+    fvec_set_sample (x->in, in[j], x->pos);
+    /*time to do something */
+    if (x->pos == x->hopsize - 1) {
+      /* block loop */
+      aubio_onset_do (x->o, x->in, x->out);
+      if (fvec_get_sample (x->out, 0) > 0.) {
+        outlet_bang (x->onsetbang);
+      }
+      /* end of block loop */
+      x->pos = -1;              /* so it will be zero next j loop */
+    }
+    x->pos++;
+  }
+  return (w + 4);
+}
+
+static void
+aubioonset_tilde_dsp (t_aubioonset_tilde * x, t_signal ** sp)
+{
+  dsp_add (aubioonset_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
+}
+
+static void
+aubioonset_tilde_debug (t_aubioonset_tilde * x)
+{
+  post ("aubioonset~ bufsize:\t%d", x->bufsize);
+  post ("aubioonset~ hopsize:\t%d", x->hopsize);
+  post ("aubioonset~ threshold:\t%f", x->threshold);
+  post ("aubioonset~ audio in:\t%f", x->in->data[0]);
+  post ("aubioonset~ onset:\t%f", x->out->data[0]);
+}
+
+static void *
+aubioonset_tilde_new (t_floatarg f)
+{
+  t_aubioonset_tilde *x =
+      (t_aubioonset_tilde *) pd_new (aubioonset_tilde_class);
+
+  x->threshold = (f < 1e-5) ? 0.1 : (f > 10.) ? 10. : f;
+  x->bufsize = 1024;
+  x->hopsize = x->bufsize / 2;
+
+  x->o = new_aubio_onset ("complex",
+      x->bufsize, x->hopsize, (uint_t) sys_getsr ());
+  x->in = (fvec_t *) new_fvec (x->hopsize);
+  x->out = (fvec_t *) new_fvec (1);
+
+  floatinlet_new (&x->x_obj, &x->threshold);
+  x->onsetbang = outlet_new (&x->x_obj, &s_bang);
+  post (aubioonset_version);
+  return (void *) x;
+}
+
+void
+aubioonset_tilde_setup (void)
+{
+  aubioonset_tilde_class = class_new (gensym ("aubioonset~"),
+      (t_newmethod) aubioonset_tilde_new,
+      0, sizeof (t_aubioonset_tilde), CLASS_DEFAULT, A_DEFFLOAT, 0);
+  class_addmethod (aubioonset_tilde_class,
+      (t_method) aubioonset_tilde_dsp, gensym ("dsp"), 0);
+  class_addmethod (aubioonset_tilde_class,
+      (t_method) aubioonset_tilde_debug, gensym ("debug"), 0);
+  CLASS_MAINSIGNALIN (aubioonset_tilde_class, t_aubioonset_tilde, threshold);
+}